The satellites of the Global Positioning System GPS broadcast radio signals to enable GPS receivers on or near ... GPS system itself is operated by the U.S. Department of Defense for both military use and use by the general public. GPS signals include ranging signals, used to measure the distance to the satellite ... constellation, called the almanac . Basic GPS signals The original GPS design contains two ranging ... GPS message format Subframes Words Description rowspan 2 1 1&ndash 2 Telemetry and handover words br TLM and HOW 3&ndash 10 Satellite clock, br GPS time relationship rowspan 2 2 3 1&ndash 2 Telemetry ... information about each satellite s position and the network. The GPS design has this information ... the GPS date and time, plus the satellite s status and an indication of its health. The second part ..., requires 6 seconds to transmit. Each subframe has the GPS time. Subframe 1 contains the GPS date week number and information to correct the satellite s time to GPS time, plus satellite status ... the GPS time actually the time when the first bit of the next subframe will be transmitted and identifies ... GPS User Equipment Introduction format PDF url http www.navcen.uscg.gov pubs gps gpsuser gpsuser.pdf ... Resources gps compendiumgps x 02007.pdf Essentials of Satellite Navigation Compendium ref The remaining ... satellite in the constellation, an Ionosphere ionospheric model, and information to relate GPS derived ... PDF title Interface Specification IS GPS 200, Revision D Navstar GPS Space Segment Navigation User Interfaces publisher Navstar GPS Joint Program Office Page 103. ref The almanac serves several purposes ... derived from the GPS called GPS time to the international time standard of UTC . Finally, the almanac ... source for a single frequency GPS receiver. Each satellite transmits not only its own ephemeris , but transmits ... rate. Frequency information Image GPS signal modulation scheme.svg thumb right GPS broadcast ... be modulated onto a carrier wave carrier frequency. In the case of the original GPS design ... more details
Infobox Spacecraft Image File GPS IIR.jpg 200px Caption Artist s impression of a GPS Block IIR satellite in orbit Organisation United States Air Force US Air Force Major Contractors Astro Space satellite br Boeing IDS Launch Service Provider LSP Bus GPS Block IIR AS 4000 Mission Type Navigation Launch 17 January 1997, 16 28 01 GMT Carrier Rocket Delta II 7925 9.5 Launch Site Cape Canaveral Air Force Station CCAFS Cape Canaveral Air Force Station Launch Complex 17 LC 17A Mission Duration 13 seconds achieved br 10 years planned Mass convert 2030 kg Orbit regime Failed to orbit br Medium Earth orbit MEO planned GPS IIR 1 or GPS SVN 42 was the first GPS Block IIR Block IIR GPS satellite to be launched. It was to have been operated as part of the United States United States Air Force Air Force Global Positioning System . It was launched on 17 January 1997, however it was destroyed thirteen seconds into its flight due to a malfunction of the Delta II rocket that was carrying it. ref name CNN It was estimated to have cost United States dollar US 40 million, with its carrier rocket costing 55 million. ref name CNN cite web url http edition.cnn.com TECH 9701 17 rocket.explosion index.html title Unmanned rocket explodes after liftoff date 1997 01 17 publisher CNN accessdate 2009 06 21 ref The satellite which was used for the IIR 1 mission was the second production IIR satellite, SVN 42. ref name JSR 311 cite web url http www.planet4589.org space jsr back news.311 title Issue 311 ... 21 ref Launch File Delta II GEM 40 Booster.jpg left 130px thumb A Delta II solid rocket motor GPS IIR ... cite web url http www.spaceandtech.com spacedata logs 1997 1997 f01a gps 2r 1 sumpub.shtml title NAVSTAR GPS 2R 1 Summary publisher Andrews Space & Technology accessdate 2009 06 21 ref triggering the rocket ... 21 ref GPS IIR 1 was to have replaced an older satellite, which was still operational at the time of its ... could be launched. ref name SSF The launch of GPS IIR 1 was the last to use the Complex 17 blockhouse ... more details
The GPS tracking server has three responsibilities receiving data from the GPS tracking unit , securely storing it in database , and serving this information on demand to the user. GPS tracking server software Proprietary servers GpsGate GpsGate Server GpsGate Server server platform for GPS tracking built around AJAX, XML JSON, .NET and MySQL. GpsGate Server can be installed on a Windows server or subscribed to as a service. Wialon GPS tracking software platform with some fleet management features, developed by a Belarusian company Gurtam. Wialon is available for both Linux and Windows operating systems. There is also free online service http gps trace.com GPS Trace Orange . http Counter Source.co.in Counter Source.co.in is GPS tracking software platform with complete solution on fleet management, personal tracking, container tracking features. It also offer LIFE TIME FREE tracking system with limited features. Open source servers http opengts.sourceforge.net OpenGTS open source project designed specifically to provide web based GPS tracking services for a fleet of vehicles. http traccar.sourceforge.net Open GPS Tracking Server open source server for various popular GPS tracking devices TK102, TK103, GPS103 and other cheap china trackers . Server doesn t have web interface itself, but can be easily configured to work with OpenGTS or any other GPS tracking system. See also GPS tracking unit Vehicle tracking system External links http gpsgate.com GpsGate server http gurtam.com Gurtam Wialon http opengts.sourceforge.net OpenGTS http traccar.sourceforge.net Open GPS Tracking Server http counter source.co.in Counter Source DEFAULTSORT GPS tracking server Category Geolocation Category GPS Category Satellite navigation systems Category Tracking Category Wireless locating ... more details
GPS Radio occultation is a relatively new technique first applied in 1995 for performing atmospheric measurements. It is used as a weather forecasting tool, and could also be harnessed in monitoring climate change . The technique involves a low Earth orbit satellite receiving a signal from a GPS satellite. The signal has to pass through the atmosphere and gets refracted along the way. The magnitude of the refraction depends on the temperature and water vapor concentration in the atmosphere. ref name GPS Thermometer cite web title GPS thermometer could flag up climate change url http technology.newscientist.com channel tech dn13329 gps thermometer could flag up climate change.html?feedId online news rss20 accessdate 2008 02 16 ref GPS Radio occultation amounts to an almost instantaneous depiction of the atmospheric state. The relative position between the GPS satellite and the low Earth orbit satellite changes over time, allowing for a vertical scanning of successive layers of the atmosphere. ref name GPS Space Based & Radio occultation cite web title GPS Space Based & GPS Radio occultation url http geodaf.mt.asi.it html old GPSAtmo space.html accessdate 2008 02 16 ref See also GPS meteorology External links http www.cosmic.ucar.edu COSMIC Project Website http www.geooptics.com GeoOptics LLC Website First commercial operational RO Constellation References references Category GPS Category Weather prediction Climate stub ... more details
Orphan date September 2008 Refimprove date December 2009 Golf GPS rangefinders are used in the sport of golf to aid the player in accurately determining the distance to certain fixed points on a golf course , such as the green golf green or various hazard golf hazards . They can either be a standalone purpose built device or a piece of software installed on another device, such as a smartphone , which contains GPS capabilities. Especially for higher standard golfers, who will generally have better distance control, there are clear advantages to knowing the precise yardages compared with traditional methods of gauging distance, such as yardage charts and pacing. Golf GPS applications for GPS enabled smartphone s are becoming increasingly popular as a cheaper alternative to dedicated units, although the accuracy of both the course mapping and inbuilt GPS is commonly somewhat lower, and may be thought to be not accurate enough for a precision sport. Laser rangefinder s are a competing technology that do not requiring any course data or GPS hardware. References reflist DEFAULTSORT Golf Gps Rangefinder Category Golf equipment Sport equipment stub ... more details
. A GPS navigation device is any device that receives Global Positioning System GPS signals for the purpose of determining the device s current location on Earth. GPS devices provide latitude and longitude ... to rely on exclusively to pilot aircraft. GPS devices are used in military, aviation, marine and consumer product applications. GPS devices may also have additional capabilities such as containing ..., all GPS devices can answer the question Where am I? , and may also be able to answer which roads ... applications File Tracks around the Birkenkopf.png thumb Varying accuracy of different GPS receivers Consumer GPS navigation devices include Dedicated GPS navigation devices GPS modules that need to be connected to a computer to be used GPS loggers that record trip information for download. Such GPS ... photograph s. Converged devices, including GPS Phones and Auto geotagging GPS cameras , in which GPS is a feature rather than the main purpose of the device. Those devices are the majority, Clarify date February 2012 and may use assisted GPS or standalone not network dependent or both. The vulnerability of consumer GPS to radio frequency interference from LightSquared Interference issues planned wireless data services is controversial. Dedicated GPS navigation devices see also automotive navigation system personal navigation assistant File GPS Receivers 2007.jpg thumb A variety of hand held receivers Image KyotoTaxiRide.jpg thumb right A Taxicab taxi equipped with GPS navigation system ... TeleType products Mobile phones with GPS capability Due in part to regulations encouraging mobile phone tracking , including E911 , the majority of GPS receivers are built into mobile telephone s, with varying ... them to use an internal or external GPS receiver in the latter case, connecting via serial communications serial or Bluetooth . Some phones with GPS capability work by assisted GPS A GPS only ... can navigate worldwide with satellite GPS signals as a dedicated portable GPS receiver does, upgrading ... more details
Infobox Spacecraft class image Navstar 2F.jpg caption Artist s impression of a Block IIF GPS satellite in orbit name GPS Block IIF manufacturer Boeing country USA applications Navigation satellite orbits ... failed lost first GPS IIF SV 1 br nowrap 28 May 2010, 03 00 UTC last retired mass 1630 power batteries ... size along Y axis in metres, raw value z axis size along Z axis in metres, raw value GPS Block IIF , or GPS IIF is an interim class of GPS satellite , which will be used to keep the Navstar Global Positioning System operational until the GPS modernization Block IIIA satellites become operational. They are being ... title Global Positioning System GPS IIF url http www.boeing.com defense space space gps index.html publisher Boeing accessdate 27 May 2010 ref They will be the final component of the Block II GPS constellation .... Like earlier GPS satellites, Block IIF spacecraft operate in semi synchronous orbit semi synchronous ... of twelve hours. The satellites will replace the GPS Block IIA satellites which were launched between ... First Block 2F GPS Satellite Launched Needed to Prevent System Failure article18483.htm title First Block 2F GPS Satellite Launched, Needed to Prevent System Failure publisher DailyTech date accessdate ... , which was used to orbit earlier Block II GPS satellites, they can place the satellites directly into their operational ... cite web last Pike first John title GPS Block II F url http www.globalsecurity.org space systems gps 2f.htm publisher Globalsecurity.org accessdate 27 May 2010 ref New characteristics Broadcasting L5 GPS modernization Safety of Life L5 safety of life navigation signal demonstrated on USA 203 ref name dailytech1 Broadcasting a new GPS signals M code signal ref name dailytech1 Doubling in the predicted ... processors that can receive software uploads ref name dailytech1 The first GPS satellites ... dailytech1 Launches The first GPS IIF satellite, GPS IIF SV 1 Space Vehicle 1 , was launched by a Delta ... air force new gps satellite launch 100527.html title Air Force Launches Advanced New GPS ... more details
orphan date July 2010 Copy to Wikibooks GPS in the Earthmoving Industry GPS when applied in the earthmoving .... Since GPS satellite positioning information is free to the public, it allows for everyone to take advantage of its uses. Engineering vehicle Heavy equipment manufacturers in conjunction with GPS guidance system manufacturers have been co developing GPS guidance systems for heavy equipment since the late 1990s. These systems allow the equipment operator to use GPS position data to make decisions based ... s implements automatically from a set design that was created for the particular jobsite. GPS ... compared to relying on the operator s skill level. Since the machine s GPS system has the ability ... for a specific job. History of GPS in the Earthmoving Industry GPS Technology was officially introduced ... of earthmoving equipment now offer GPS and other guidance systems as a factory option. Many companies exist that also sell GPS guidance systems for the earthmoving industry as a retrofit option. The two ... were available from various companies to retrofit an existing machine for GPS guidance, Caterpillar Inc. was the first heavy equipment manufacturer to offer GPS guidance systems as a factory option from the dealer called an ARO Attachment Ready Option . ref Caterpillar Inc. 2003 . AccuGrade GPS. Article ... ref Types of GPS Systems Used in the Heavy Equipment Industries While there are various GPS systems ... only or fully automatic . ref name equipmentworldmagazine.com Jackson, T. 2008 . Technology GPS by the numbers ... apps news articleeqw.asp?id 66334 ref Both systems can utilize one or two GPS receivers. Using only one GPS receiver limits how the guidance system can orientate the machine s position in respect to the site design. Using two GPS receivers gives the guidance system two points of position allowing ... only and fully automatic in more detail. Indicate Only Indicate only uses GPS positioning information ... into the machine s implement control system s. Indicate only systems typically utilize a single GPS ... more details
The Interagency GPS Executive Board IGEB was an agency of the Federal government of the United States United States federal government that sought to integrate the needs and desires of various governmental agencies into formal Global Positioning System Planning. GPS was administered by the United States Department of Defense Department of Defense , but had grown to service a wide variety of constituents. The majority of GPS uses are now non military, so this board was fundamental in ensuring the needs of non military users. In 2004, the IGEB was superseded by the National Executive Committee for Space Based Positioning, Navigation and Timing PNT , established by presidential order. External links http pnt.gov public 1997 2004 Archive of the IGEB at the National Executive Committee for Space Based Positioning, Navigation, and Timing PNT US gov stub Category GPS Category Defunct agencies of the United States government ... more details
Unreferenced date December 2009 High Sensitivity Global Positioning System GPS receivers use large banks of correlators and digital signal processing to search for GPS signals very quickly. This results in very fast time to first fix times to first fix when the signals are at their normal levels, for example outdoors. When GPS signals are weak, for example indoors, the extra processing power can be used to integrate weak signals to the point where they can be used to provide a position or timing solution. GPS signals are already very weak when they arrive at the Earth s surface. The GPS satellite s have transmitter s that only deliver 27 W from a distance of 20,200 km in orbit above the Earth. By the time the signals arrive at the user s receiver, they are typically as weak as 160 dBW , equivalent to one tenth of a millionth billionth of a watt. This is well below the thermal noise level in its bandwidth. Outdoors, GPS signals are typically around the 155 dBW level. Conventional GPS receivers integrate the received GPS signals for the same amount of time as the duration of a complete Global Positioning System Navigation signals C A code cycle which is 1 ms. This results in the ability to acquire and track signals down to around the 160 dBW level. High Sensitivity GPS receivers are able to integrate the incoming signals for up to 1,000 times longer than this and therefore acquire signals up to 1,000 times weaker. A good High Sensitivity GPS receiver can acquire signals down to 185 dBW, and tracking can be continued down to levels approaching 190 dBW. High Sensitivity GPS can provide positioning in many but not all Indoor positioning system indoor locations . Signals ... propagation multipath . Given that High Sensitivity GPS receivers may be up to 30 decibel dB more sensitive ... status Patent title High sensitivity GPS receiver and reception pubdate 2003 08 21 gdate 2004 01 ... also Differential GPS GNSS Augmentation DEFAULTSORT High Sensitivity Gps Category GPS Category Navigation ... more details
Orphan date February 2009 unreferenced date May 2008 The National Association of Sessional GPs NASGP formerly the National Association of Non Principals is a group representing doctors in the United Kingdom . History and activities The organisation was founded 1997 by a group of Sessional GP s independent general practitioners with the aim of representing all fully qualified GPs working as locum s, assistants, salaried GPs, and retainers. The organisation has a chief executive officer, a business manager, and a council of seven members elected through national ballot. The organisation publishes The Sessional GP , a bimonthly newsletter on topics relating to sessional GPs. It also acts as an umbrella organisation for approximately 65 local sessional GP groups. Aims and objectives The group represents sessional GPs at a national level, provides support for members and for local sessional GP groups. The group is involved in lobbying other medical organisations to ensure equitable representation of sessional GPs. class wikitable Chairmen Dr Mike Uprichard 2006 br Dr Cath Sheperd 2003 2006 br Dr Richard Fieldhouse 1997 2003 External links http www.nasgp.org.uk National Association of Sessional GPs Category General practice ... more details
Image PLGR tan green.jpg right thumb Two PLGRs, showing different color schemes The Precision Lightweight GPS Receiver PLGR, colloquially plugger is a rugged computer ruggedized , hand held, single frequency GPS receiver fielded by the US military . It incorporates the Precise Positioning Service Security Module PPS SM to access the encrypted P Y code GPS signals GPS signal . Introduced in January 1990, and extensively fielded until 2004 when it was replaced by its successor, the Defense Advanced GPS Receiver DAGR . In that time period more than 165,000 PLGRs were procured worldwide, and despite being superseded by the DAGR, large numbers remain in unit inventories and it continues to be the most widely used GPS receiver in the US military. The PLGR measures 9.5 by 4.1 by 2.6 inches nowrap 24 cm 10 cm 7 cm and weighs convert 2.75 lb with batteries. It was originally delivered to the US military with a six year warranty, however this was extended to 10 years in June 2000. See also Defense Advanced GPS Receiver References reflist refbegin https gps.army.mil gps CustomContent gps ue plgr.htm http www.rockwellcollins.com news gallery gov navigation page2997.html http www.ion.org museum files PLGR 9 1.PDF http www.prc68.com I PLGR.shtml Brooke Clarke s excellent PLGR page refend Compu hardware stub mil stub radio comm stub Category GPS Category Military equipment of the United States Category Military electronics of the United States ... more details
Image DAGR.jpg thumb right The Defense Advanced GPS Receiver DAGR The Defense Advanced GPS Receiver DAGR colloquially, dagger is a handheld GPS receiver used by the United States Department of Defense and select foreign military services. It is a military grade, dual frequency receiver, and has the security hardware necessary to decode the encrypted P Y code GPS signals GPS signal . Manufactured by Rockwell Collins , the DAGR entered production in March 2004, with the 40,000th unit delivered in September 2005. It was estimated by the news source Defense Industry Daily that, by the end of 2006, the USA and various allies around the world had issued almost 300 million worth of DAGR contracts, and ordered almost 125,000 units. ref http www.defenseindustrydaily.com 2006 11 827m more for dagr gps receivers index.php more 82.7M more for DAGR GPS Receivers . Defense Industry Daily ref The DAGR replaced the Precision Lightweight GPS Receiver PLGR , which was first fielded in 1994. Due to the COMSEC electronics inside the DAGR, it is against US federal law Which? date December 2008 for any individual or organization not authorized by the National Security Agency NSA to purchase or be in possession of the device. When devices are no longer useful or operational, they are to be returned to an NSA ... manufactures a GPS receiver known as the Polaris Guide , that looks like a DAGR, but uses only the civilian ... frequency GPS signal reception. Capable of Direct Y code acquisition Cold start first fix in less than ... . Wide Area GPS Enhancement WAGE compatible. Resistant to multi path effects. Can be used as survey ... per unit to acquire 1,832 ref http www.afspc.af.mil news story.asp?id 123017018 GPS enables DAGR ... 4 batteries Reliability 2000 hours 5000 hours See also Precision Lightweight GPS Receiver References ... US Army http www.wikileaks.org wiki US military GPS PSN 13A DAGR manual 282005 29 AN PSN 13A ... GPS Category Military equipment of the United States Category Military electronics of the United States ... more details
A GPS Clock, or GPS disciplined oscillator GPSDO is a combination of a GPS receiver and a high quality, stable oscillator such as a quartz or rubidium oscillator whose output is controlled to agree with the signals broadcast by GPS and GNSS satellites. ref http www.4timing.com SyncGPS.pdf ref ref http tf.nist.gov general enc d.htm Time and Frequency from A to Z Bot generated title ref GPSDOs work well as a source of timing because the satellite signals must be accurate in order to provide positional accuracy for GPS in navigation. These signals are accurate to nanoseconds and provide a good reference for timing applications. ref name autogenerated1 http tf.nist.gov general pdf 2297.pdf ref ref ... around the world Global Positioning System Timekeeping use GPS to align their own time scales to UTC. ref http www.agilent.com metrology gps do report.shtml Agilent GPS DO Performance Bot generated title ref ref name autogenerated2 http tycho.usno.navy.mil ptti 1998 Vol 2030 15.pdf ref GPS based standards are used to Holdover in synchronization applications The Importance of GPS Derived Timing ... the output to a GPS signal via a tracking loop. The disciplining mechanism works in a similar ... name autogenerated1 ref http www.symmetricom.com products gps solutions gps time frequency receivers ... is the way it is able to combine the stability characteristics of the GPS signal and the oscillator controlled by the tracking loop. GPS receivers have excellent long term stability as characterized ... term stability of the GPS signals to give a reference source with excellent overall stability characteristics. ref http www.ko4bb.com Timing FAQ 2.php Def1 ref When the GPS signal becomes unavailable ... availability Selective Availability SA prior to May 2000 restricted the accuracy of GPS signals available ... www.leapsecond.com pages saoff Effect of no SA on HP 58503A GPS Time & Frequency Receiver Bot generated ... projects freqstd frqstd.htm GPS Disciplined 10MHz Oscillator http www.vectron.com ... more details
A GPS tracking unit is a device that uses the Global Positioning System to determine the precise location ... later, using GPS tracking software . GPS tracking unit Architecture File GPS tracker Hardware Architecture.png 475px center thumb Typical GPS tracker architecture A GPS tracker essentially contains GPS module to receive the GPS signal and calculate the coordinates. For data loggers it contains large ... depicts a hardware architecture of an advanced GPS tracker. Types of GPS trackers Usually, a GPS tracker will fall into one of these three categories, though most smartphone s, being GPS Phone s, can ... Royaltek rgm 3800 IMGP9822 OSM.jpg thumb Typical GPS logger A GPS logger simply Data logging logs the position of the device at regular intervals in its internal memory. Modern GPS loggers have either ... or point of interest list may be in GPS eXchange Format GPX , Keyhole Markup Language KML ... clock was reasonably accurate or used GPS as its time source, this time can be correlated with GPS .... Cameras with GPS receiver built in can directly produce such a geotagged photograph . In some Private ... common type of GPS tracking unit, used for asset tracking , personal tracking and vehicle tracking Vehicle tracking system . Also known as a GPS beacon , this kind of device Push technology pushes .... A GPS navigation device and a mobile phone sit side by side in the same box, powered by the same ... from the GPS receiver. Newer GPS integrated smartphone s running GPS tracking software can turn the phone ... accessdate 2010 03 12 ref ref cite web title open gpstracker A GPS tracking Android App ... accessdate 2009 12 06 ref Most of the modern GPS trackers provide data push technology, enabling sophisticated GPS tracking in business environments, specifically organizations that employ a mobile workforce, such as a commercial fleet. Typical GPS tracking systems used in commercial fleets have two ... of extra data, which later get transferred to the GPS tracking server , where it is available for viewing ... more details
unreferenced date June 2010 Essay date May 2010 GPS Global Position System aircraft tracking are systems installed on aircraft to give position reports over a satellite and or cellular network. This information is typically accessed from a web based mapping interface where current and historical information can be viewed. These devices come in many different forms some are portable devices that can be moved between aircraft and others are fixed installations. There are varying degrees of fixed installations some with only the antenna permanently installed and others where the electronics must be installed in the dash of the cockpit. GPS aircraft tracking systems report aircraft specific information such as speed, bearing and altitude and sometimes have built in voice or data communications capabilities. These systems have varying configurations for reporting intervals, typically from one minute to fifteen minute time intervals but cellular based systems can also report at shorter intervals. Some devices also have the ability to report for AFF. Some common satellite networks include the Iridium satellite constellation , Globalstar , and Inmarsat . Data networks such as Aircraft Communications Addressing and Reporting System ACARS can also be used for periodic transmission of GPS positions ... and rescue who typically spend multiple days searching for a missing aircraft. GPS aircraft tracking ... government agency. By having GPS aircraft tracking on board an aircraft, aircraft operators ... are required to have GPS aircraft tracking by law. This is called AFF Automated Flight Following ... operator several advantages. The first is the classic peace of mind. Some GPS aircraft tracking ... in advance of landing. Manufacturers of GPS aircraft tracking devices for general aviation http www.guardianmobility.com ... v2track http www.spidertracks.com Spidertracks DEFAULTSORT Gps Aircraft Tracking Category GPS Category GPS navigation devices ... more details
Orphan date February 2009 cleanup date October 2007 Image CAD, GIS, & GPS Magazine.png right thumb CAD, GIS, & GPS Magazine logo CAD, GIS & GPS Magazine is a portal in Arabic language Arabic , concerned with engineering software related to computer aided design CAD software, like AutoCAD , MicroStation , and Archicad . The portal zooms in also on geographical information system GIS software such as ArcView , ArcGIS , Autodesk Map , MapInfo , and GeoMedia , in addition to global positioning system GPS technology, remote sensing RS software like ERDAS Imagine , and computer aided manufacturing Computer aided manufacturing CAM software, such as Inventor and Mechanical Desktop . History Established in 2000 by Samer Joudi lang ar , this portal is intended for Arab countries as well as Arabic speakers outside the Arab region. It aims at deploying the culture of CAD , GIS , GPS , RS , and Computer aided manufacturing CAM technologies, connecting the users, be they beginners or experts, of such kind of software, to make the users able to share and develop their knowledge and their academic qualification. The portal aims at developing the Arabic language through the founding and maintaining of unified technical terminology of these fields of information technology to be used consistently across the 22 Arab countries. Services CAD, GIS & GPS Magazine provides a wide range of services that meet the needs of engineers, technicians and university students. These services come into various sections like News and Teach Yourself sections, in addition to the Forums with thousands of members. In the ten of thousands of topics in these forums, members share experiences and knowledge ... in CAD , GIS , GPS , RS , and Computer aided manufacturing CAM technologies. Over and above these sections ... terminology of CAD , GIS , GPS , RS , and Computer aided manufacturing CAM technologies. External links ar icon http www.cadmagazine.net CAD, GIS & GPS Magazine website Category Web portals ... more details
refimprove date February 2010 wikify date February 2010 GPS intelligent buoy GIB systems may be classified as inverted LBL devices where the transducers are installed on GPS equipped sonobuoys that are either drifting or moored. ref Thomas, H.G. GIB Buoys An Interface Between Space and Depths of the Ocean , Proceedings of IEEE Autonomous Underwater Vehicles, Cambridge, MA, USA, pages 181 184, August 1998 ref GIBs may be used in conjunction with an active underwater device such as a pinger equipped torpedo , or with a passive acoustic sound source such as an inert bomb striking the surface of the water ... Based on Buoys with GPS , Proceedings of the Eighth European Conference on Underwater Acoustics ... desired. Different methods of GPS positioning may be used for positioning the array of GIBs ... are manufactured by the French company ACSA underwater GPS subsidiary of the ALCEN group . Three ... Navy sonobuoys with small OEM grade GPS receivers and deploying them from a helicopter or from ..., M. Preliminary Results from a GPS Based Portable Impact Location System , Proceedings of The Institute of Navigation s Satellite Division Meeting, ION GPS 95, Palm Springs, California, 12 15 September, 1995 ref The GPS data captured by the GIB was modulated over the analog VHF acoustic data stream using frequency shift keying FSK . This allows the GPS measurement data to be transmitted and received .... Post mission the GPS and acoustic data from the GIBs would be combined to determine an absolute ... and training system ref http www.tridentresearch.com pubs Weapon Scoring Results from GPS Acoustic System.pdf Kayser, J.R., Cardoza, M.A., et. al., Weapon Scoring Results from a GPS Acoustic Weapons ... by 2 km array. In the case of the TARGT GIB, the GPS and RF antennas are located on top of the sensor ... and recovery ship combines the GPS data and acoustic timing information to triangulate the impact ... DEFAULTSORT Gps Intelligent Buoys Category Buoyage ... more details
in GPS and geomatics engineering to specify the additional multiplicative effect of GPS satellite geometry on GPS precision. Image Example of Geometric Dilution Of Precision GDOP for simple Triangulation.png ... right thumb GPS satellites with poor geometry for Geometric Dilution of Precision GDOP . Image Good gdop.png right thumb GPS satellites good geometry for Geometric Dilution of Precision GDOP . Introduction ... author Richard B. Langley work GPS World date May 1999 accessdate 2011 10 12 ref The idea of Geometric ... of GPS. Neglecting ionospheric ref cite web url http www.insidegnss.com node 1579 title GNSS and Ionospheric ... gps howgps error.shtml GPS errors Trimble tutorial ref effects, the signal from GPS satellites has a fixed .... When visible GPS satellites are close together in the sky, the geometry is said to be weak and the DOP ... DOP value represents a better GPS positional precision due to the wider angular separation between the satellites used to calculate a GPS unit s position. Other factors that can increase the effective .... GPS receivers allow the display of these positions skyplot as well as the DOP values. The term ... ref http www.colorado.edu geography gcraft notes gps gif gdop.gif ref . Formulate the matrix, Q , as math ... gpsgps survey chap1 142.htm Section 1.4.2 of Principles of Satellite Positioning where the weighting ... in agreement with http www.gmat.unsw.edu.au snap gpsgps survey chap1 149.htm Section 1.4.9 of Principles ... Own GPS Applications Part 2 Causes of Precision Error http www.colorado.edu geography gcraft notes gps gif gdop.gif manually calculating GDOP http users.erols.com dlwilson gpshdop.htm HDOP AND GPS ... 2007 determining local gps satellite geometry effects on position accuracy Determining Local GPS Satellite Geometry Effects On Position Accuracy . Notes & GIF image on manually calculating GDOP http www.colorado.edu geography gcraft notes gps gps.html Gdop Geographer s Craft Analysis and explanation of data related to GPS accuracy http users.erols.com dlwilson gps.html David L. Wilson ... more details
For other uses GPX disambiguation Infobox file format name GPS eXchange Format icon logo screenshot caption extension tt .gpx tt mime application gpx xml type code uniform type magic owner released 2002 latest release version 1.1 ref name gpx main http www.topografix.com gpx.asp GPX the GPS Exchange Format ref latest release date August 9, 2004 genre container for contained by extended from XML extended to standard url http www.topografix.com gpx.asp www.topografix.com gpx.asp GPX , or GPS eXchange Format is an XML schema designed as a common GPS data format for software applications. It can be used to describe waypoint s, GPS tracking tracks , and routes. The format is open and can be used without the need to pay license fees. Its tags store location, elevation, and time and can in this way be used to interchange data between GPS devices and software packages. Such computer programs allow users, for example, to view their tracks, project their tracks on satellite images or other maps, annotate maps, and Geotagged photograph tag photographs with the geolocation in the Exif metadata. Data types File Wayroutrackp.png thumb In GPX, a collection of points, with no sequential relationship the county towns of England, say, or all Skyscrapers in New York , is deemed a collection of individual waypoint s. An ordered collection of points may be expressed as a track or a route . Conceptually ... 400t hand held GPS unit. This document does not show all functionality which can be stored in the GPX ... , Garmin Training Center XML External links http www.topografix.com gpx.asp GPX the GPS Exchange Format ... GPS mapping software , Conversion of GPX files into IMG file format References Reflist Category Computer file formats Category XML based standards Category Markup languages Category GPS software type stub ca Gpx de GPS Exchange Format es GPX eu GPX fr GPX format de fichier it GPS eXchange Format hu GPX nl GPS Exchange Format ja GPX pl GPX pt GPX ru GPX zh GPX ... more details
Wide Area GPS Enhancement WAGE is a method to increase the horizontal accuracy of the GPS encrypted GPS signals P Y Code by adding additional range correction data to the satellite broadcast navigation message. Per a 1997 article, the navigation message for each satellite is updated once daily or as needed. This daily update of each satellite navigation message contains the range corrections for all the satellites in the constellation. Thus, more timely range correction information would be available for each satellite, resulting in increased horizontal accuracy. Potential improvements to the system include simplifying the upload procedure, uploading the data more often, and adding more monitor stations for better range correction. WAGE is available only to the Precise Positioning Service PPS or P Y Code receivers. It requires at least 12.5 minutes to obtain the most recent WAGE data. After that, the process of using the corrections data is automatic and transparent to the operator. Any time the receiver is on, it continually collects WAGE data whether the WAGE mode is on or off . The receiver always uses the most recent WAGE data available to calculate position and it will not use the data that is over 6 hours old. A 1996 evaluation using a PLGR a 5 channel L2 GPS receiver found no clear advantage to using WAGE in its then current configuration. Its overall average error of 9.1 meters was worse than when WAGE was not used. However, the specifications information for the Defense Advanced GPS Receiver , which has replaced the PLGR, lists its WAGE accuracy as better than 4.82 m, 95 Horizontal. PPS accuracy has improved beyond WAGE specification and accuracy improvement from WAGE is now negligible. Modern receivers & atomic clocks on a chip will also outperform WAGE. Some theorize ... http www.fs.fed.us eng pubs htmlpubs htm97712327 index.htm Wide Area GPS Enhancement WAGE Evaluation ... Crosslink Summer 2002. Geo term stub Category GPS ... more details
Infobox Album See Wikipedia WikiProject Albums Name GPS, V1 Rare Metals Type Album Artist Dave Douglas trumpeter Dave Douglas Cover Released 2011 Recorded January 2011 Genre Jazz Length Label Greenleaf Music Producer Dave Douglas trumpeter Dave Douglas GPS, V1 Rare Metals is an album by trumpet er Dave Douglas trumpeter Dave Douglas . It was released on Douglas Greenleaf Music label in 2011 and features music by Dave Douglas for his band Brass Ecstasy, Vincent Chancey , Luis Bonilla , Marcus Rojas , and Nasheet Waits . GPS stands for Greenleaf Portable Series. This is volume one in that series. Track listing Town Hall 7 06 Night Growl 4 13 Lush Life Billy Strayhorn Strayhorn 7 29 Thread 6 01 Safeway 5 10 My Old Sign 5 50 All compositions by Dave Douglas except as indicated Personnel Dave Douglas trumpeter Dave Douglas trumpet Vincent Chancey Horn in F horn Luis Bonilla trombone Marcus Rojas tuba Nasheet Waits drum kit drum s Category 2011 albums Category Dave Douglas albums Category E1 Music albums ... more details
Infobox Album See Wikipedia WikiProject Albums Name GPS, V2 Orange Afternoons Type Album Artist Dave Douglas trumpeter Dave Douglas Cover Released August 30th, 2011 Recorded March 2011 Genre Jazz Length Label Greenleaf Music Producer Dave Douglas trumpeter Dave Douglas GPS, V2 Orange Afternoons is an album by trumpet er Dave Douglas trumpeter Dave Douglas . It was released on Douglas Greenleaf Music label in 2011 and features music by Dave Douglas with Ravi Coltrane , Vijay Iyer , Linda Oh , and Marcus Gilmore . GPS stands for Greenleaf Portable Series. This is volume two in that series. Track listing The Gulf 9 01 Valori Bollati 7 22 Solato Billy Strayhorn Strayhorn 8 18 Orologi 11 38 Orange Afternoons 8 24 Frontier Justice 4 13 All compositions by Dave Douglas Personnel Dave Douglas trumpeter Dave Douglas trumpet Ravi Coltrane tenor saxophone Vijay Iyer piano Linda Oh bass Marcus Gilmore drums Category 2011 albums Category Dave Douglas albums Category E1 Music albums ... more details
GPS wildlife tracking is a process whereby biologists , scientific researchers or conservation agencies can remotely observe relatively fine scale movement or wikt migration migratory patterns in a free ranging wild animal using the Global Positioning System and optional environmental sensors or automated data retrieval technologies such as Argos System Argos satellite uplink, Circuit Switched Data mobile data telephony or GPRS and a range of analytical software tools. ref Schofield, Gail et al., Novel GPS tracking of sea turtles as a tool for conservation management , Journal of Experimental Marine Biology and Ecology 347 2007 58 68 ref A GPS enabled device will normally record and store location ..., using a GIS package or custom software. While GPS tracking devices may also be attached to domestic ..., the high resolution tracks available from a GPS enabled system can potentially allow for tighter control ... Track Migratory Birds GPS the Latest Tool in Fight Against Avian Influenza 9 6 2006 9 38 16 AM Bot generated ... technology 6188482.stm BBC NEWS Technology Snow leopard fitted with GPS tag Bot generated title ref ... and marine mammals . In the case of birds, the GPS unit must be very lightweight to avoid interfering ... deployments, taping ref P. G. Ryan, S. L. Petersen, G. Peters and D. Gr millet, GPS tracking a marine ... Embedded Duty Cycle Scheduling GPS devices typically record data about the animal s exact location and store ... a longer deployment. ref P. G. Ryan, S. L. Petersen, G. Peters and D. Gr millet, GPS tracking a marine ... 2008 Analytical Locational data provided by GPS devices can be displayed using GIS packages such as the open ... data and may reveal behavioural patterns or trends. Data Deletion Argos GPS tracking devices have been ... generated title ref GSM GPS location data can be transmitted via the GSM mobile cell phone network ... 2 , pp.274 283 ref UHF VHF GPS data may be transmitted via short range radio signals and decoded using ... DEFAULTSORT Gps Wildlife Tracking Category GPS Category Wildlife Category Conservation Category ... more details
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